Shizzz, I have posted this many, many times. An easy and cheap way to get started with a great tank is the Artemas Tank from madvapes.com along with Smoktech flanged cartos in 1.7 Ohms, 2 Ohms, or 3 Ohms with one or two holes prepunched from Crystal Clear Vaping. The tanks (no cartridge) are under $9.00 each, do not leak, lock the carto in, look good, are well made, and I have yet to damage one after almost 6 months of use. I have four of them and love them. The flanged XL cartos from crystalclearvaping.com are about $10 per box of 5 or cheaper in boxes of three. They are "generally" quite good and I find each carto will last at least a week and sometimes 2 weeks. I say generally because once in awhile you get a bad carto (China quality control is not the best).
Best Wishes Wabbit