In the Libraries' catalogue - remember to refine your results by chemistry under the DISCIPLINE section - and in chemistry databases, add words such as protocol*, method* and technique* to your search words to find more documents.
"Currentprotocols.com features tools, calculators, videos, data sets, and webinars to help researchers both in the lab and beyond the bench." From Wiley.
"Current Protocols in Nucleic Acid Chemistry is the comprehensive resource for detailed protocols related to the synthesis, modification, and analysis of modified and unmodified nucleosides, nucleotides, oligonucleotides, and nucleic acids." From Wiley.
