I'm getting started in bioinformatics and I want to study some methylation profiles in different organism, but first I need to obtain bs-seq fastq files for mapping reads against a reference genome using Bismark; I got a test dataset from the Bismark website, but I want to know how to search and obtain that type of fastq files, in single and paired-end format, and I'm not sure what database to use (I'm trying with GEO, but I'm not familiar with how that database works; besides, I'm not sure which parameters to use in query (should I search 'methylation profiling by array'? by 'high throughput sequencing'?), so I'd really appreciate any help for someone just starting to work with this kind of data.