If you already know portions of speaking French or Spanish (either of these languages), you are actually helping yourself in enriching your foreign language vocabulary. This is because when you start learning either of the romance languages, you are opening to chances of learning other European romance languages as well.
This doesn't mean though that starting to learn the Italian language doesn't require your complete understanding of the lessons. You still have to start from the simplest Italian language lesson to the difficult part. We all know how to obtain Italian lessons as well. An online course is one thing or taking a formal course from a university is also a good option.
If attending a complete full course of the subject does not appeal much to your busy schedule; try taking lessons that you can learn in a daily basis. Or better yet, take one Italian word each day. No need to worry in moving on to the next though, because the more you understand its meaning and purpose; the better you are able to use it with other Italian words.
Enriching yourself with more than one language is a great way of maintaining and putting your brain to constant work. If the Italian language is a completely new experience for you, so it is to your brain. For all you know, you are actually helping your brain maintains its efficiency by inputting new information to it everyday.
To help you remember the words more, try putting up posts of the lesson you have for one day around the house. This will clearly help you remember more the current lessons you're trying to learn.
