B.Arch

Hi Adarsh,
Education loan needs to be applied with an approval letter from the dean/Principle of your college of Architecture mentioning that it's a 5-year course, also a letter from the dean/principle estimating the required amount to complete the course. Other than that bank would require the following documents:
I. Proof of identity (PAN card/ passport/ driving license/election and employment ID card) – parent.
ii. Proof of address (Tel bill/ electricity bill/lease agreement/driving licence / passport) – parent.
iii. Salary slip/certificate (latest)-parent (6 months).
iv. Form 16 (2 years) salary or it return /balance sheet (3 years)-parent.
V. Copy of bank account statement (last 6 months) /loan a/c statement if any – parent.
Vi. College admission letter.
Vii. Fee structure letter.
Viii. Mark sheets/certificates of the last exam (X and XII).
Ix. Application form (student and parent/guardian)
X. Pan card of both student and parent mandatory.
Xi. 2 passport size photographs of each (student and parent).
XII. If family income less than 4. 5 lacs then income certificate from tehsildar/appropriate authority to apply for interest subsidy.
Xiii. Aadhar card of the student and parent/guardian.

The best approach to score well in the exam will be to combine your board's preparation with JEE Main paper 2 preparations, though the format may differ but the concepts remain the same.
Tips for B. Arch JEE:
1. Focus on understanding the concept before moving on to the next topic. Refer to both Class XI and XII books for maths especially.
2. Divide your syllabus into monthly and weekly segments and assign practical targets to achieve them.
3. Work on your observation skills and drawing to prepare for the aptitude and drawing tests. You may join a coaching class for drawing practice.
4. Utilize your engineering drawing notes for 2D/3D questions preparation.
5. Clear your doubt at the earliest to avoid any confusion later.
6. Try to add variation in your daily study schedule, like study maths, drawing and aptitude related topics, to avoid monotony.
7. Make revision notes/flash cards on concepts, formulae, definitions etc. for each topic.
8. Solve enough sample papers and previous years tests to develop pace and practice. You can even take online mock tests for practice.
Books for B.Arch JEE:
Few useful reference books besides the CBSE NCERTs are:
1. A Complete Self Study Guide for B.Arch 2015 Entrance Examination (English) by P.K Mishra, Arihant Publications
2. Verbal & Non-Verbal Reasoning Book by R.S. Aggarwal,
3. Architecture Entrance Book by P.K. Mishra.