Some sisters have mentioned that they would be interested to learn more about Montessori education and its methodology insha'Allah. The following links may be helpful in getting you started insha'Allah.
The North American Montessori Centre (They offer distance learning education. Their manuals are able to be bought without you enrolling in their courses. The manuals have step by step directions about how to do the activities (from what I have seen). They offer materials and courses for Birth to 12 years old if my memory is good insha'Allah. Based in Canada).
My Montessori House (They have albums that have activities, with directions, to do with your child(ren) from birth to grade 1, in a homeschool setting or a classroom setting. I'm thinking about ordering one myself as the albums are as low as $39 US. From what I've seen the activities look pretty good but check to see if this meets your specific needs insha'Allah).
The Montessori Institute (many schools are accredited through this organization. Their courses can be expensive depending on what your ultimate goal is).
If you need links for more specific goals that you have in mind please leave a comment and insha'Allah, I will add to this post.