Mm, apologies for necro-ing-up this thread, but I just got into to WoT (9.1) too, still getting to grips with
Tier 1, still using original lineup; just in the...
Vickers Medium MkI (1st WoT tank I got 'buttoned-up'/had-a-spin-in); full engine, turret, radio tracks/sups'n, and the top Tier 1/2 37mm Cannon for it + small repair.
the Renault Otsu, full engine, turret, radio tracks/sups'n, and the top Tier 1/2 37mm Cannon for it + small repair.
the Loltrack; full engine, turret, radio; full engine, turret, radio tracks/sups'n, and either of the top Tier 1/2 37mm Cannon or the 2cm(20mm) Kwk Machine Cannon/Autcannon + small repair.
Tier 2
the T18 after I won some xp to swicth from the (abysmal for me - the crew didn't enjoy it) T1, switchng the Cmd. Driver from the T1 to the new tank destroyer; stock + small repair.
Only 63-ish battles in.. and around 100,000 Cr, and 80+ xp..
now I've just got to get once (or twice) a week on it for ....for ever it'd seem.