I think we'll be seeing a seeing the same as previous years in which we will be getting our 2 free starter packs which will be tradable. In these starter packs,

If you recieve anyone who you think is worth anything more than 5k, do NOT sell them, people don't have coins to spend so they won't have the money to buy the bigger players and they will go cheap. People have sold Ibrahimovic's, Ribery, Robbens ect.. all for under 50k in previous years because nobody can afford to outbid the highest bidder. Also people will not wanting to be putting all of their coins into 1 player worth 5-20k so keep them and get more for them after console release.

Do NOT discard anything you recieve in packs until you know what they can sell for cause even 50 coins would be amazing at this stage.

(Remember, anything you think is worth more than 5k, don't sell till after release).

Rare golds = 650 start bid + No buy it now (List 3 times for 1 hour, discard if they don't sell).

Non-rare golds = 350 start bid + No buy it now (List 3 times for 1 hour, discard if they don't sell).

Rare silvers can be hard to price, if they're in a good league, have high pace for their position and are an overall good player, then I would just keep in your club until after release.

Any you want to sell = 300 start bid + No buy it now (List 2 times and discard if they don't sell).

None-rare silvers = 150 start bid + No buy it now (List 2 times and discard if they don't sell).

Rare bronzes can be hard to price once again, if they're in a good league, have high pace for their position and are an overall good player, then I would just keep in your club until after release.

Any you want to sell = 150 start bid + No buy it now (List 2 times and discard if they don't sell).

None-rare bronzes = 150 start bid + No buy it now (List once and discard if they don't sell).

Consumables:

Contracts are pretty much worthless on the web app cause nobody needs them, the market will be full of them so you won't even get 150 for rare gold contracts. I would advise you keep all rare contracts till after console release and discard all none-rare contracts.

Chemistry Styles, I would keep them all in my club until after console release except from anything for a GK which I would discard.

Position Changes, I would keep them all in my club until after console release execpt for anything containing a RWB or LWB which I would discard.

Injury = Discard

Training = Discard

Manager League = Discard
Club Items:

You should only be keeping kits or badges if they are one of a big team in the BPL, BBVA or Bundislega (a few others such as PSG, Juventus ect...) or ones which look really cool and will sell.

Only a few stadiums are worth keeping such as the big leagues and teams above.

The rest of these along with and ball should be discarded.

Staff:

Only the best managers should be kept, ones in big leagues.
Any rare golds which aren't of a big league = 300 start bid + No buy now (list 2 times, discard if they don't sell).

Anything else should be discarded, they are pretty useless at this stage and it's easy coins so don't think too much about hanging onto them if they won't sell quickly.

So once you've got some coins coming in, you want to be putting it to use and my favourite method for the web app is one which everyone can do, it does not take any skill and you can't lose coins.
Discard Method:

So what you guys want to do is search for 'Gold' + '150 Max Bid'.

Now just go ham and bid on anything which you can bid on for 150, 200 or 250 coins.

* You will win a lot of rare golds for this price so you can focus on them if you wish however you obviously won't get as much.

Your coins should update so you will only run out of coins to bid on players when you know you have won players so backout and go to your watchlist.

Discard everything, you will make at least 300 coins on non-rare golds and 600 on rare-golds.

If you pick up 10 rare cards for 150 coins, that's at least 4.5k profit already.

You will be picking up non-rare cards like hotcakes so I'd say you'll be getting at least 10 every minute. If you're bidding 150 on each then that 1.5k every minute if you do it right.

* I believe you can only bid on 30 items at once in Fifa 15 so you'll need to clear out your watch list a lot.

This is the only method you will need to make coins quickly.

* Here is a tip for you, seeing as there no more autobuyers, make sure to check 'Gold' + 'Buy Now = 300' every once in a while because you'd be surprised some of the deals people put up which you can make a profit on. This will happen a lot more on the release day of console though.

This is completley personal prefrence to wether you're confident enough to risk your coins or not. I personally don't use all of my coins (I trade constantly with the rest) but I like to try and find some players which I know I can sell for more after release.

My personal favourites and high rated rare silvers in good leagues which I know will sell for a lot.
I'm sure you can find tips on who other people are buying or watch some YouTube videos.

However this isn't for most people, just keep all of your coins and use them to trade if you're not confident in what you're doing here.

Make sure you login to the web app everyday because their will be gifts once a day which are coins boosts and packs. You can get up to 2.5k if you're lucky in a coin boost, the packs can either be 12 players or 4 players and can either be gold, silver or bronze.

* You can use multiple accounts and get daily gifts on all of them.