1. What are some kits that are great for practicing scratchbuilding? i would like to do a sherman if possible.
Well, since the level of detail on newer kits is pretty high (Dragon, Tristar, Tamiya), I'd say your best bet is an older kit. I'd lean towards Tamiya. I've got a couple scratchbuilding projects going on right now, both on Tamiya kits.
2. The sherman zippo flamethrower tank , does anyone make this model?
Are you looking specifically for the "Zippo" tank? That is, the M4A3R3 used at Iwo?
I don't know if you can find it, but Cyberr-Hobby did the M4A3 Flamethrower kit (#024). It comes with a set of US Marines, Korea figures.
3.If i were to invest in some enamel paints what would be a good couple of colors to get ? i mainly paint acrylic.
I shoot acrylics too. Are you planning to switch to enamels or just want a few to round out your paint supply. Truth be told, the only enamels that I have are the 'Metalizer' colors - mostly gunmetal and brass. Other than that, not many enamels make their way onto my builds.
4.what is the best type of glue to use for individual track links?
Ooooo, good question. You want a slow setting, brushable, liquid cement. I use Testors. Once you apply it, you've got about an hour before it sets up, so you can leave the track runs to set for a bit (I wait about 45 minutes) and still have some time to work them into place and add any sag.
5.is there a major difference between milliput yellow grey and milliput ultra fine?
Don't know.
6. Does anyone else other than trumpeter make the 203mm russian tracked howitzer ?
Don't know, but I doubt it. Well, let me rephrase that - I doubt there is another kit in plastic. It would not surprise me to find it in resin (and wicked expensive).
WAIT: Scratch that. A quick google search led me to this:
http://www.1999.co.jp/eng/10144919
I don't know anything about the company or about the kit, but there you have it.
By the way, AFV Club does make an ammo set for this beast.
7. what are the highest quality non resin 1/35 figure manufacturers
So, plastic? Umm, Dragon figures, particularly the Gen2, are pretty good. So are Tristar. I know Miniart has a lot of figure sets out, but I'm not familiar with them.