1)I've got a core set, Y-wing, TIE advanced. And I want to make squads (both, imp and reb) that are interesting to play with. So, I am waiting for your advices?

Alliance

Named list-1

Luke+R2-D2[32]

D. Vander+ion turret[28]

[60]

Named list -2

Luke+R2-D2+ determination [33]

Gold squadron +ion turret+ proton torpedo[27]

[60]

Unnamed list

Red squadron+R2-D2+proton torpedoes[31]

Grey squadron+ion turret+proton torpedoes [29]

[60]

Empire

Named list-1

Darth Vader+cluster missiles+swarm tactics (or better I'd take squad leader?) [35]

Academy pilot [12]

Obsidian pilot [13]

[60]

Named list-2

"Mauler" Mithel [17]

Dark curse [16]

Tempest squadron+cluster missiles[25]

[59]

Unnamed list

Black squadron+marksmanship[17]

Black squadron+expert handling[16]

Tempest squadron+cluster missiles[25]

[58]

2) what expansions should I buy to make the game even more interesting and fun? Rest of wave 1? Or a couple of wave 2 ships?

The lists look pretty good considering what you have.

As to question 2. Depends on what you want and like. Wave 2 isn't really any better then 1 or 3 for that matter. B-Wings are pretty nice though.

Depending on your budget, my suggestion would be a 2nd core set, it gives you 3 more ships for as little as $25 as well as extra templates, dice and damage deck. All of which are really handy if you're supplying stuff for someone else to use.

Then you can start making 2 X-Wing and 4 Tie Fighter lists.

After that I'd suggest the Falcon and Slave 1, they really add a lot of options to the game.

Depending on your budget, my suggestion would be a 2nd core set, it gives you 3 more ships for as little as $25 as well as extra templates, dice and damage deck. All of which are really handy if you're supplying stuff for someone else to use.Then you can start making 2 X-Wing and 4 Tie Fighter lists.After that I'd suggest the Falcon and Slave 1, they really add a lot of options to the game.

Well, I was only able to find core set for 34$ in Amazon. If you can, please, give me a link to the store, where I can buy core set for 25$.

I take it you don't live in the US. Where do you live? Others from around the world have had suggestions as to the best place to buy stuff..

Well, I live in Russia. So usually I ask my friends from the USA to bring me some miniatures, because they are much cheaper in the US or order them online in Amazon.

Here's the store I mentioned.

http://www.miniaturemarket.com/table-top-miniatures/x-wing.html

Thank you very much!