How to study sbl

I think exam kits are useful. Of course many questions there can be found on the ACCA site but there are often tutorial notes and othet guidance in the kits. Also, kits will probabky provide more pracrice than available from just the published past exams.

kits contain direct questions too , and explain too much about model. Will direct questions come in exam. and are we required to explain model too?

Is studying from opentuition notes and only solving 18 papers in total enough in order to pass with decent marks?

I don't know what you mean by 'direct questions'. Almost certainly you will not be asked to explain a model, but instead to apply it. However, you can't apply it if you don't know it. OT notes, lectures and technical articles are recommended. 18 papers should certainly be enough.

Thank you sir