I am very new (first time) user of Galaxy. I am trying to analyze Illumina Fastq files for 16S diversity study. Unfortunately, my data quality is bad so I can not create contigs from forward and reverse reads (I did 2x300 bp, the last 150 from each read has a low quality, on generating a contigs I get 600 bp long instead of 300 bp, so I need to trim to 150 bp and run single read, right). How do I combine just my read 1 fastq files, retaining the sample name for all the sequences in each file of course, so that I can proceed with the following alignment and classification steps? There was a post long ago on this. I followed it and still doesn't work. The post suggested using Fastq.info then to combine fasta files (i did using concatenate files) and to create a group file. Later on to use both combined fasta file s and the group file in the downstream analysis in the tutorial pipeline. but it didn't work. Any help, please.