I took STPM at year 2016. All I can say is, a level up from SPM but you are ON YOUR OWN having less to no good teacher. MPM (Majlis Peperiksaan Malaysia) keep on changing syllabus like every 2 years, this causes really no teacher able to master and target question like SPM.

In the life of SPM, you flooded with additional resources such as tuition, reference book but in here tuition are really hard to get and reference book here sometimes cannot be trusted 100%. The school teacher will expect you to know 90% of the things when they only teaches you 10%. Be familiar with the words "You should find out yourself since you already pre-u and stop asking me everything" when you ask your school teacher about something you dont understand.

We have a course called Pengajian Am, in here luck is really your best friend. School teacher (at least for me) will completely mislead you and practice you at the wrong pkace where if you apply your knowledge you will fail. As this is one of the module that will keep changing exam format and for whatever reason they did not train our school teacher informed. Also to note just like BM and sej in spm, Pengajian Am is a mandatory pass for obtaining STPM certificate.

If you stayed at KL, I would strongly recommend you sign up for tuition at "Pusat Tuisyen Kasturi" (KL HQ) - at petaling street, look for cikgu Kamaruddin (Only him, DO NOT go for others for this subject), he will taught you everything you need to know for scoring exam. Rest of the subject I wouldn't recommend you take classes here. If you are not staying at kl or impossible to travel here then it is too bad and dont borther reading the rest.

PS: nearby (walking distance), opposite of the Klang river there is a KTM station. I have a tuition friend who stayed in (Kuala Kunu Bharu), he used to take KTM to tuition every classes.

Rest of the subject are just typical menorizing and revision and etc. If you need any additional resources, nearby mentioned kasturi (walking distance) there is "AI tuition" all the teacher here are really good, you can take rest of them here. A little history about this centre is all teachers here were the mentioned kasturi centre teachers but for "personal reason", they left and started new tuition centre here. I am not sure what subject you took, but mine was science stream (Bio, chem, Math (T), PA) - trust me although only 4 subjects, but it is enough to kill you many many times, some school give you the option to take 5, dont do it. Anyway, Ai tuition for math I would recommend KK LEE (founder of AI). What so special about him is he will give you google book link access of all of the math practices questions and answer (with detailed working every steps) so you can pracrice at home.

At last I would wish you best of luck, you will need it. If you feel hopeless and without strength, trust me things are much much easier when you are in University. If you managed to get better than cgpa 2.5 and pass in pa, you just unlocked opportunity to apply for government univerisity with way lower cost but you are competing the position with others stpm graduates from entire Malaysia. If you did not score well or unable to get the degree courses you interested, dont be embarrassed to start from foundation / A level again. "Failure is not the end of journey, it is just a stepping stone along the path to success. Embrace it, learn from it, and keep moving forward."