Mind Expansion

Start with lighting incense/candle(if you chose to use them).

Take position you feel comfortable and start meditating(I'm not going to explain how because if you don't know you are absolutely NOT ready for any attempt at spell casting), focus on inside as opposite to most other meditations in magic where one focuses on the outside and try to go as deep as your abilities will allow without forcing it(deeper you go, easier it will be to complete other steps).

Now when you get as deep as you can you should notice that your "mind" is like a small pearl(at least that's how it looked to me), anyway this step is fairly simple focus your energy in that "pearl" separate a small peace of it(this is going to be seed for second "pearl") than start feeding that seed with your energy until it grows to at least 1/2 of the originals size(you will have to do "feeding" part multiple times until your new pearl gets stable enough and of acceptable size), last step is connecting the original "pearl" with the smaller one.

For purpose of connecting you should use some form of organic construct(trees are good start) as they are most natural way of connecting parts in one functional unit.

 Now what must be kept in mind is that this new "pearl", this new expansion of ones mind is pretty much empty and no mater the size still young and weak therefor it must be trained and developed just like any other mind(reading, solving puzzles, studying /if you notice that its starting to develop its own personality that is not and Echo of yours, cut the connection with it, it should disperse in few days, you do not want to have split personality), now as it grows it will start to behave as a sort of a warehouse or an archive that will keep specific type of memories for easier access as well as serve as support system for mental processes and additional defense on mental/spiritual and emotional level.

Feeding process will last for couple of days and final result will actually be only around 1/4 of the originals size. Also you may have to repeat process of making the seed multiple times as original will try to reabsorb it into self(good news is that seed will almost always be noticeable and relatively easy to access and extract again).