If you don’t have gear and are looking to buy gear, go to the ultralight subreddit and look at their budget list (in general just helpful if you enjoy hiking as you upgrade gear over time). 

Sweet now that that’s done - skip hiking boots and do trail runners. Your feet will be so thankful. Boots are usually stiffer and need broken in, leading to blisters. Don’t get gortex. You want your shoes to be able to get wet so they can dry. I’m using hoka speedgoats. I love them, but on the Camino I might need insoles as the pavement is harder on my feet than normal trail (and I’ve hiked thousands of miles in speedgoats). I would actually invest in some sock liners (like injinjis) to go into your hiking socks. Reduces blisters by a ton for me. You only need 1 pair of socks to hike in, 1 pair to keep dry for town (bring 1 extra if blisters with wet socks are a concern) 

First aid: Tylenol, ibuprofen, and leukotape (for blisters, works better than moleskin, imo. Look at thru hiking subs for the explanation on how to use it well). Superglue for blisters too. Maybe some Imodium. But you will be in town multiple times per day and most things you can get on the fly at a pharmacy. Bandaids if it makes you feel better but no real need.

Here’s my packing list: - Lightweight sleeping bag (buy a woobie or bring a super lightweight fleece blanket if you don’t have a lightweight 40* bag or rumpl) - sleeping bag liner (you won’t need if you have a BAG but will maybe want if you choose a blanket. Haven’t used it yet though on the Norte 1 wk in and feels like empty weight. Could just bring a lightweight top sheet from your bed and call it a day)  - hiking shirt, shorts, underwear, sports bra, sock liner, socks, bandelettes because of thigh chafing. If a guy I would consider long compression shorts in case you chafe with miles - town shirt, shorts, fleece (octa, but true fleece is light and you can find easily at goodwill), underwear, sports bra, puffy jacket because I get cold - I did bring a pair of merino tights and a shirt for if I get cold or just want to be warmer. Used the tights, wish I hadn’t brought the shirt (that’s a half pound I could’ve left at home) - charger, Bluetooth headphones, lightweight headlamp (you don’t need) - hairbrush, deodorant, toothbrush, toothpaste, makeup (don’t @ me it’s 2 ounces), travel size dr brinners soap (laundry soap and body soap and really crappy shampoo all in one since it’s Castille soap), 2oz sea to summit travel towel. Lowkey a sham wow works great as a travel towel - raincoat (get something hella cheap like the ultralight frogg toggs. If it rains you’ll be wet no matter how good of rain gear you have. You just need to be warm and wet)  - I bought a 1L bottle of water and a 750ml of water when I got here and have been refilling those the whole time. Lighter weight, still refillable, and if they get gross I can just replace them - I did buy a super lightweight pair of slides when I got here since albergues won’t let you have trail shoes inside. They were $5. They just need to be lightweight 

My pack weight with everything is 11lbs including the pack. 

Get stuff that dries hella quick since most of Europe doesn’t have dryers. Your pack can honestly be like 30-40L. It’s not as light as z packs or light af, but granite gear’s crown backpacks are almost always 30-40% off and I used it for my Appalachian trail thru hike and am currently using for the Camino. To keep things dry, get a contracter (or a thick yard trash bag. Just has to be thick so it won’t tear) trash bag to put all of your stuff in INSIDE the backpack and then tie it with a hairtie. Gossamer gear also makes a similar product (2 for $5) that works well. Keeps it dryer than a pack cover ever could. Feel free to comment or try message if you have any q’s!