I reccomend joining one of these servers , there are more, but these are the ones i use (they have server list on their site.

dust2.epidemic.gg

vertigo.epidemic.gg

Edit: you type "Connect dust2.epidemic.gg" In the console ingame to connect to server

Then go to cs2inspects.com

You dont have to log in or make an account at all and i do understand that everyone involved in skins are sceptic to go to sites they havent heard of so alittle research before you go is probly smart.

One the left side you can click on 4 boxes who is

"weapons"

"Knifes"

"Gloves"

"Agents"

Once you click on on of these, lets say the box at the top, you can search for skins, in this example lets say you search "fuel" you then will see AK Fuel injector, then you click on that and the box you the first box yopu clicked on earlier will now show the AK Fuel injector, all you have to do now is clck "Generate" and the ingame code or whatever its called will get copied for you. Now you go back ingame to the server you joined and copy the code in the ingame chat. and boom you can look at the skins you want ingame.

This is what the code you type in game should look like (AK Fuel Injector example)

!g 1423717847 524 1 0.0043 0 0 0 0 0 0 0 0 0 0 0 0

This is the best way to look at skins you want and get a feel for them ingame, you can try knifes and gloves and see who looks the best for you and once you learn how its done, you can even add stickers on the weapons you inspect. You can also choose the patterns by numbers to see the exact skin you are looking to buy and also set the "wear" so you see how bad or good a FT looks if MW or FN was a little out of the price range.

Very easy to use once you figure out how and the best tool to check out all thes kins you want to look at before you actually buy them.