You can learn yourself with lot of good resources available on the web

Rosalind is a platform for learning bioinformatics through problem solving- http://rosalind.info/problems/locations/

RNAseq for everyone: http://rnaseq.uoregon.edu/analysis.html

NGS wiki books: http://en.wikibooks.org/wiki/Next_Generation_Sequencing_%28NGS%29/RNA

RNAseq blog: http://www.rna-seqblog.com/

NGS analysis with R and Bioconductor: http://manuals.bioinformatics.ucr.edu/home/ht-seq

omics tools: http://omictools.com/mrna-seq/

RNAseq protocol: http://onlinelibrary.wiley.com/doi/10.1002/0471142727.mb0411s89/abstract

I got started with Beginning Perl for Bioinformatics (useful for coding, but probably not RNA-Seq)

http://shop.oreilly.com/product/9780596000806.do

That said, I think there are a lot of good resources on the web, so I typically wouldn't recommend buying books.

Although I only provide a handful of links to tutorials, I've tried to keep a list of software that I've found useful. So, perhaps this can be a useful starting point in your search:

http://cdwscience.blogspot.com/2013/03/bioinformatics-101.html

Not aimed directly at genomics, but good for learning how to code in Perl and R for bioinformatics work: http://www.bookcascade.co.uk/product/Building_Bioinformatics_Solutions-Conrad_Bessant/9780199658565

This is the second edition of the book, being released in the New Year. There is a first edition, which you can probably get used: http://www.bookcascade.co.uk/product/Building_Bioinformatics_Solutions_with_Perl_R_and_MySQL-Conrad_Bessant/9780199230235