In addition to what everyone else is saying get some of these d-ring hangers to secure to the back of the shelf. You only need two hangers about 2/3rds back on the vertical boards to take the weight.
Make sure to predrill the screw holes when mounting these brackets to your self to prevent the wood splitting/cracking. After that hang it on the wall using two screws and plastic drywall anchors like recommend by others. Predrill the wall to screw in the plastic anchors as well.
NarrativeBear t1_j2465xx wrote
Reply to Help hanging a shelf I found! I'm at a total loss because I'm a noob... by Megraptor
In addition to what everyone else is saying get some of these d-ring hangers to secure to the back of the shelf. You only need two hangers about 2/3rds back on the vertical boards to take the weight.
https://www.homedepot.ca/product/ook-large-2-hole-d-ring-hangers--2pcs/1001027312?eid=PS_GOOGLE_D00%20-%20E-Comm_GGL_Shopping_PLA_EN_All%20Products_All%20Products__PRODUCT_GROUP_pla-300587868876&gclid=CjwKCAiAkrWdBhBkEiwAZ9cdcGmm8ygOVc1EBtS5F0k4nmvQYEG5XNacR7UT9o6ZqmupOI46jqvkdRoCdSMQAvD_BwE&gclsrc=aw.ds
If you feel more confident you can also use a wood chisel and get flush mount keyhole hangers into the same spots instead.
https://www.homedepot.ca/product/ook-keyhole-picture-hanger/1001026198?eid=PS_GOOGLE_D00%20-%20E-Comm_GGL_Shopping_PLA_EN_All%20Products_All%20Products__PRODUCT_GROUP_pla-300587868876&gclid=CjwKCAiAkrWdBhBkEiwAZ9cdcOhVvtR3WmsI-7DKlZkGDhhFWfB9twN08Vf_ga7RN5QymsEBN80NFxoCM3cQAvD_BwE&gclsrc=aw.ds
Make sure to predrill the screw holes when mounting these brackets to your self to prevent the wood splitting/cracking. After that hang it on the wall using two screws and plastic drywall anchors like recommend by others. Predrill the wall to screw in the plastic anchors as well.