I concede I might've edited too much text, but undoubtedly the OP made typos. Saxon genitives are missing.
The problem is Bertsekas book is introductory while Ross book explains expression $E[\ E[X\mid Y] \ ]$ just by briefly saying it is a function of $y$ if I remeber correctly.
"i" as a pronoun must be capitalized.
How do i develop a very good conception in probability theory to do advanced theoretical research in communication theory? Which book do i follow to gain a solid conception about the subject.I have the original manuscript of A N Kolmogorov but do not have the mathematical background to understand it.
I emboldened the grammatical mistakes.
Tomorrow I will begin my studies, real analysis, however I have some difficulties in making statements so I thought before starting the study in real analysis, learn how to do demonstrations properly.
I know only learn by doing, but use a book as support would be of great help,
https://www.math.ubc.ca/~angel/probab/
This URL is broken, but the post doesn't say so.
Exercises with solutions for probability theory?
The title is deceptive. OP is talking about measure-theoretic probability theory, not just introductory probability theory.