About books... The Squadron Signal Publication series on armour is I think always useful to have around; there's a German publisher that has numerous books in the same format as SSP, in German, mostly dealing with German material, but I can't remember their name (I'll check tonight from home!). For more detailled stuff, the Verlinden books are pretty good. For pictures about specific theatre of operations, and in some cases, specific vehicles, the Concord books are outstanding. If you have lots of cash, the Panzer in Saumur books are fantastic. If you are into German stuff, you'll still need the famed 'Panzer Colours I, 2, 3' books from SSP.
In terms of mags, you have Armor in Miniatures, Minitracks (French/English text) and the best (to me anyway), SteelMasters (French language only unfortunately).