Boy, have you come to the right place!
First, check out the FREE curriculum guide here! It has how to combine the family for many subjects, along with specific suggestions. http://simplycharlottemason.com/planning/scmguide/
You might also want to check out the various series topics here, including things like “Making the Transition to CM” and “Planning your CM Education”…. http://simplycharlottemason.com/series/
There are a lot of great free resources in the bookstore on this site too, as well as some for sale. Of the ones for sale, the “All Day Seminar” is great for getting going.
And you can find little segments of info by going to YouTube and searching for Sonya Shafer (or Simply Charlotte Mason)…
There is lots more info, but don’t want to overwhelm you… so feel free to ask questions!
As for math – my kids really love RightStart Math (they always WANT to do math first)… but it might not fit your budget. I had it gifted to me.
For some free fun for math, if you might like an online program, is Khan Academy. I don’t personally like the videos, but others do – but you can sign up your kids, and sign up as their coach – they go into “practice” and it suggests what they may want to work on (based on what they have done before) – and it gives them problems to work on, and they can do that type of problem until they master it – then they can continue or go to a new suggestion. They can earn “badges” for various things. My kids also love this. As their “coach” you can see what they have done, how they are doing on it, any problems, etc.
For a very good free math program, you can also check out MEP Math. I know of many people doing it. If interested, I’ll give you more info on it. It is free, except you will need to print out the worksheets (and either look at the lesson plans online, or on a kindle, or print them too.) For Year 1 and 2 (and maybe more?) I’d recommend cuisinaire rods… although they do have a paper version you can print. I’d also recommend dominoes, something to count (we used beads) – and that was about it.
Hope this helps!