You say you are a new student. My strong advice to you is not to overload yourself. Take things in easy stages and do not move on until you have mastered each stage. There is no harm in reading around subjects (an excellent idea), but understanding will only come from combining theory with first hand practical experience. Do not persist with anything that you feel uncomfortable about, and do not be too quick to believe or accept everything you read, or are told. Think for yourself! And - Patience ad Perseverance!!
In my view Abramelin is not for the raw beginner. I am not sure what you would achieve in reading it, other than satisfying curiosity, and I strongly suspect without being patronizing that you may not understand very much of it. Many with a good deal of experience would readily admit they are struggling!!
In general one should never play around with any type of ritual magick, it is a serious subject!
The right and the wrong things are basically what is right for you, and what you feel at ease with.
Crowley wrote Magick in Theory and Practice for beginners. In my opinion if you thoroughly understand this work you will be far from a beginner! However, I do think that it is an excellent starting place to study Crowley. (The OTO edition of Book 4 is a really good book that will be useful to you right the way through your magickal career, so to speak. This edition - beware of rip-off fekes - has a super set of tables of correspondences, masses of useful notes, and effectively is several books all thrown together.) Book 4 will also provide a good insight into Crowleys's theology and philosophy. The OTO edition contains the fourth part of Book 4, 'Thelema', which is essentially a good portion of the Equinox of The Gods. Another excellent work is Magic Without Tears, wherein Crowley is unusually open and straightforward. Each question is answered separately, and each is pretty well stand alone, so you can 'dip into the bits; that interest you without having to plough through a large tome and suffer from a surfeit of information!
I suggest a good basic primer to start with. Practice, understand and become thoroughly familiar with the basics before moving on. You will be amazed how effective some basic, apparently very simple, techniques can be. The Lesser Banishing Ritual of The Pentagram is a good example, because the techniques you will learn should provide a solid foundation for further work. Donald Kraig's Twelve Lessons in Magic is a work I have found helpful. It certainly clarifies some of Crowleys more obscure passages!
Some people find it very easy to learn quickly and make rapid progress, others take longer. There is no time limit, work at your own pace. Everyone comes across a stumbling block sooner or later. Stick with it!!
If there is a good group within access I suggest you make contact, as advice from those with genuine experience is invaluable. If they are any good, they will tell you the things that are not written in the books, the things only gained from first hand experience. Again, be careful not to get drawn into a dodgy set up or a scam - there are a lot around. Just take it easy and tread carefully, and you should be OK! If you follow the simple basic rules you should come to no harm!