Weight gain advise

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Hello, hope you all are having a great day. I would greatly appreciate if you could advise me with the following;
I'm 28years 5"9' around 64kilos. I started going to gym 2 years ago more seriously in the last year or so. I came down from being 90kilos fat to 60kilos being skinny. Now I want to get on the plus side of 70, but I got some love handles, fairly flat on the abs section but love handles. I want to get rid of them and gain a few kilograms. I cannot afford a personal trainer or a dietician.
Thank you in advance
Good day