Any time you spend in the alpha state (or lower) of meditation will yield great benefits to your health and state of mind. You'll allow your body to heal, bring in insights or greater focus on solutions to your problems. I would suggest stating an intention before you meditatate, even if it's just simply to gain relaxation or clarity on an issue. Once in a relaxing and more healthy state of being you could bring in creative visualisations, such as a lake or sea side scene, for example. This is the more passive type of meditation practice and is worthwhile to bring you closer to your own unique spirit and any unresolved emotional issues. Your intuition will sharpen and as well as knowing yourself better, you'll come to have an even greater understanding of others too.
I've found over the years that my memory has greatly improved (for things that matter) and my vocabulary has increased by natural means. I'm often typing words that I either have not heard of before or don't know their meaning. I then look it up on google to fnd that it is indeed a word and used in the correct context. Strange huh?
There's way more of your mind available to you whilst you're meditating and for a good while after also. Your vibration, intuition, sensitivity and connection to all things will increase and strengthen over time. These aspects bring their own challenges but it's worth noting to start to take regular care of your energy body. In the same way you bathe each day etc. Cleanse your aura and energy fields to maintain your lightness of spirit and joy.
I now often use meditation for manifesting experiences into my life. This involves seeing myself being/doing/having something whilst making it sensory rich - see, hear, feel what it would be like, as if this scenario has already happened. Do this often and watch your life shift in magical ways. Your subconscious mind will throw up resistance in the form of negative thoughts, such as, 'who am I to succeed in this life?' or the many variants of self doubt. This in itself is a gift because it allows you to see what you no longer need that blocks you from achieving new goals. How to clear them is a different post but I'm sure you get the point.
I hope this helps in some way and enjoy your meditation practice. You'll find your own way and a style that best suits you. :-) x