Just keep in mind that it's possible that your MacBook is beyond hope with Linux as Linux and Mac books off and don't get along unfortunately thanks to Apple's crappy proprietary Hardware bullbleep, as for getting Linux install discs there's always https://www.osdisc.com
Hopefully this will work my suggestion for you if you're new to Linux is Linux Mint as it will be very friendly to you if you're familiar with the windows environment mint is more targeted at Windows users but it should suffice
Thanks though I am not that new to Linux through having used Mint Rebecca and Qiana in both Cinnamon and XFCE formats dual booted, even treble booted on a windows desktop also running win 7 of which I never went near for a year to be horrified at the updates when I finally did log in. LXLE on another ex Win XP laptop with broadcom wireless and yeah I have tried Ubuntu before.
What I have not done was what I have been trying to do on a Macbook with a knackered cd drive to replace or maybe dual boot with snow leopard to use Linux online and snow leopard for my apps one of which I cannot do without given the learning curve for Gimp is far too steep for me and yes, I have given it a good go. But if not dual boot just install Linux complete and run SL and my apps via an external drive of which is what I am sort of doing now given reinstalling on another drive from a Time Machine backup killed my Photoshop installation - a problem with Adobe I understand, but I have the original installation on an external drive to be using it that way. And am not worried about losing SL if something should go wrong as I have the Time Machine, a bootable SL install USB and I even have two cloned drives.
So, what have I done, well I have for now bought and already installed bootable Ubuntu 16.04 LTS USB from ebay that supposedly can be used on an old Mac, so we'll see when that turns up and take it from there, but one thing I have learned from this exercise is that I do really need to get away from clicking windows and learn a bit of coding to at least understand what I am seeing in the terminal function to not run for the hills every time I try to follow online instruction that does not do what the online says it should do.
But I will be surprised if Linux does not work to reasonable satisfaction on this 10 year old Macbook given the Linux boast of reviving old hardware