Baby Number Two?

Hello, I have a healthy 5 month old beautiful baby. I really want to have another, so they can be close together growing up. Me and my sister are seven years apart and have no relationship. Everyone is saying it's to soon let your body heal before trying for another. I agree with that, but I have bad baby fever. I have been with my husband 6 years. It took awhile to get pregnant, so could it take just as long to get pregnant with #2? Any tips on boosting chances to get pregnant? How do you know your ovulating besides checking cm and temperature? Any tips on raising two babies under 2? Really want a healthy baby girl. All the advice will help. :)