In 3rd section you need Data base concepts.....

There is a book by thomas canolly and carolyn beg about DBMS.

Topics

E-r (Entity Relationship Diagrams) ERDs
SQL (what is SQL?)
- you need to know the basic scripts to get the tables / views etc e.g. INSERT, UPDATE statements, writing procedures, TRIGGERS
What are Normalized Data bases (Normalization / De-normalizatins)
JOINS, like left outer join , inner join etc.

and yea regarding web programmming you need to know about the concepts of

1. Java Script refer to (www.w3schools.org)
2. perl (cgi)
3. HTML and CSS tags


and last but not the least an overall concept of computer graphics (findamentals)
like what exactly computer graphics are: if you would like to draw a circle or a polygon how would you do it?

these all concepts are needed to be addressed.

I can help you regrding those concepts if you have any specific questions do let me know.