How to assemble metagenomics data

Hi,
I got ITS reads (R1 and R2). I am following the tutorial https://github.com/loneknightpy/idba. I merged R1 and R2 and converted in fasta using following command (fq2fa --paired --filter read.fq read.fa). However, I am not sure how to assemble the data please let me know if I can use IDBA to assemble the data.
