In order to start earning money with CJ Affiliate, you need to start with finding targeted advertisers. Go to your CJ Affiliate account to the Advertisers tab. Search for advertisers whose brands or products you want to promote on your website. Some advertisers only work with certain types of publishers, so be sure to review the advertiser detail page before applying for the advertiser’s program.
See this short video on how to find the right advertisers.
You can see the advertiser's ID next to its name in the list of advertisers.
You can use these advertisers' IDs in CJ Affiliate Feeds generator if you want to filter products from specific advertisers.