Hello!

I'm sorry if this question comes of as naive or ignorant because I'm very new to Bioinformatics. I'm trying to do an alignment with STAR and was wondering if I could access a pre-made STAR index for the mm10 genome. I was told I could do this from UCSC but have had no luck finding it there. 

So my question is, Are there pre-made STAR index files for the mm10 genome that I could download? And if so where and how? 

Thanks in advance for any help and I'm sorry to ask such a trivial question! Let me know if there's anymore detail I can give!
I'd suggest generating your own index using the mm10 genome as per the instructions below, and using the latest gencode mouse genes. To keep things consistent (major problem in bioinformatics!!!) I'd download BOTH the genome and the annotation gtf from here [http://www.gencodegenes.org/mouse_releases/current.html][1] 

You want the Comprehensive gene annotation - PRI gtf and the Genome sequence, primary assembly (GRCm38) - PRI fasta sequence (this is your genome). 


  [1]: http://www.gencodegenes.org/mouse_releases/current.html