Hello mate
Concentrate on your lectures goddamit, make sure you are drinking plenty of water and having proper sleep.
You can study for 25 mins, have 5 mins off, then 25 mins and 5 mins off.
Our human attention span is 25 mins, you are NORMAL.

Study aids:
Do find out about mind mapping
For exams, start 10 weeks before, take week 8 off, including the weekend before and after, and start back week 10 refreshed.
Reference texts:
Buzan's Study Skills: Mind Maps, Memory Techniques, Speed Reading and More!
The Study Skills Handbook 2013
OK
When you do your lectures, the next day write up your notes, it will help make them memories!
Read around you subject in the library - online to get that first. Do it.
Concentrate on your lectures goddamit, make sure you are drinking plenty of water and having proper sleep.
You can study for 25 mins, have 5 mins off, then 25 mins and 5 mins off.
Our human attention span is 25 mins, you are NORMAL.

Study aids:
Do find out about mind mapping
For exams, start 10 weeks before, take week 8 off, including the weekend before and after, and start back week 10 refreshed.
Reference texts:
Buzan's Study Skills: Mind Maps, Memory Techniques, Speed Reading and More!
The Study Skills Handbook 2013
OK
When you do your lectures, the next day write up your notes, it will help make them memories!

Read around you subject in the library - online to get that first. Do it.