The kanji for the word "love," 愛 ("ai"), can be written in 13 strokes. The most important thing to remember is to start from the top going down and from the left going to the right.
A beginner may find writing the kanji for "love" difficult, so a tip would be to first practice writing the radical found in it, 心, which means "kokoro" or heart. There are also other ways of writing "ai." Katakana and Hiragana are two methods of writing phonetically. This means you can write the characters for "a" and "i," then combine them to form "ai," which can still mean "love."