How to improve programming capabilities

According to the testing thinking, improve the programming ability is divided into two big categories: 1. Learning theoretical knowledge; 2. Programming practice; each large class, can be divided into less small classes:

(1) Learning theory knowledge

1. Basic theory knowledge: data structure, database, operating system

2, programming language: C , Java, Lisp ,,

3, expertise: TCP / IP, embedded system, real-time system

4, systematic analysis and design: OO, generic, UML;

(2) Programming practice

1, read the source program;

2, write hand writing;

I haven't carefully learned, what is the reason for the reincarnation? Suggestions on the book, learn two three new programming languages ​​every year, when did I do it? Moreover, I am very interested in the polymorphism of C , how much time I invest in it?

I am working on this week:

1. Read an IM program source program, mainly focus on the communication protocol;

2, learn the use of SED, AWK;