How about starting with easy ones, and then gradually start learning difficult ones.
The easy ones that I would recommend are 一, 二, 三. 川, 大、小、山, 口, 中and 正 are relatively easy too.
一(いち)one
二(に)two
三(さん)three
川(かわ)river
大(だい)大きい(おおきい)big large
小(しょう)小さい(ちいさい)small
山(やま)mountain
口(くち)mouth
中(なか)inside
正しい(ただしい)right
Another way to learn Kanji would be to create your own Japanese name in Kanji, and ask your friends to call you by the name. Some examples of your name would be 亜李,亜理, 亜利, 亜梨,有里, and so on. If you go by the Japanese name in Kanji, then it would be easy for you to memorize the Kanji used for your name.