TCP/IP Illustrated, Vol. 1, it may be a little bit outdated, but the core concepts still stand.
busturn
joined 1 year ago
Keep in mind that a lot of your local marketplace sellers just order rebadged stuff from alibaba. I've found literally the same electronics i've bought locally on aliexpress for like half the price.
Alibaba is basically just wholesale aliexpress, most sellers have a minimum order quantity and have clear pricing scale depending on your order.