Noob's guide to grinding. - World of Tanks Blitz official ...
Step 3: Grinding cycle. Run the credit grinder 10-15 battles. This earned enough credits to run the exp grinder 10-20 battles, netting 15-20K XP each cycle. Rinse and repeat. Step 4: When to stop. Tanks need large quantities of both resources and I've been spending every credit I've made.