Brunch - because breakfast is too early
If you're looking to get started in R immediately, download R and R Studio, then you might want to take a look at the swirl package for R. With swirl, you can learn R while in the R console. http://swirlstats.com/
Courses for R can be found for free at Coursera.org. Johns Hopkins Bloomberg School of Public Health has developed a data science specialization through Coursera. For a certificate, there is about a $500 fee. The courses themselves, and a completion certificate, however are free.
Here's the link to the specialization: https://www.coursera.org/specializations/jhudatascience/1
Tyler's review: Unfortunately, the courses in the data science specialization are VERY fast-paced. However, they start at the beginning of each month, so if you fall behind you can pick back up the next month.
SPSS to R conversion - Tyler James Special
I am personally trying to switch to R from SPSS, so I found a really cool book. It is normally $70, but I found a PDF for free: https://science.nature.nps.gov/im/datamgmt/statistics/R/documents/R_for_SAS_SPSS_users.pdf.
R for Fledglings
A wonderful new R resource produced at the Vermont Cooperative Fish and Wildlife Research Unit is now available: https://www.uvm.edu/rsenr/vtcfwru/R/?Page=fledglings/fledglings.htm
‘R for Fledglings’ is an exceptionally user-friendly, freely available online book. It is a great resource for beginners and more experienced R
users alike. The chapters are progressive for beginners, but can serve as stand-alone features for more advanced users.
The content ranges from the basics of data entry/organization/analysis and plotting to more advanced topics like writing functions, generating Markdown reports, developing packages, and running simulations.
"As someone who has used R for years in the context of ecological analyses, this book opened up a whole new set of capacities for me. I found this book to be extremely useful as a tool, both for developing more advanced tasks and refining the clumsier approaches I had accrued over time." - Steve on Ecolog-L