There are tonnes of resources, both free and affordable for Homeschool families. I have compiled a list below and update this page regularly. 
*Note-This site contains affiliate links to products. I may receive a commission for purchases made through these links at no cost to you.

For worldwide orders including the UK, the Book Depository is excellent as delivery is free in over 100 countries*
Usborne has great books we use as spines for Science, History and Geography.
For stationary and books.
Vast selection of books with good deals.
Local Bookstore in the Middle East for English and Arabic books.
Charity shops/Thrift stores as well as Poundland/Dollar Tree stores, have great cheap deals on books so keep an eye out!

English/Language Arts
A wonderful Language Arts programme like no other which has transformed our Homechool!*
100s of free worksheets for all subjects.
No fuss, inexpensive way to teach your child how to read*
How to teach your child to read in 100 easy lessons.
100s of free worksheets for all grades.
Great to teach blending and word families.
Complete series of books, perfect for new readers.*
Bob Books
All About Spelling* is a brilliant spelling program that is particularly effective for dyslexic children. However, I use this for all my children since it uses a multi-sensory approach making spelling fun and engaging!
All About Reading* is a reading program that gives you all the tools you need to teach your child to read. All the work is done for you, and there are several activities to keep your child engaged.
Complete Grammar Program*
First Language Lessons
Make your own free handwriting sheets.
Affordable workbooks for English, Math and Science.
Free E-books for children 3-11 (includes, Biff, Chip and Kipper series)
Grammar, Spelling and Comprehension worksheets for all grades.

Math Mammoth can be purchased with US and International currencies/measurements. A great affordable option for drilling concepts.
Life of Fred Maths is a brilliant way to teach applied Math as it is taught through narrative ( Christian refs every so often.)
For Uk orders
Conquest Books
For International orders
Rainbow Resources
For Math, Science and Language Arts
Timestable practice with games and quizzes (Mute Music!)
Customizable Times Table Practice Worksheets
Times Table Generator 

Lots of hands-on Science experiments, which younger children love.
Affordable Workbooks from KS1 to KS2

Brilliant books about famous figures and events. Great reads for adults too!
Information, games and activities.

Videos, documentaries and overall reference point.
Affordable Geography Curriculum incorporating arts and crafts.
Online Encyclopedia

Qur’an, Arabic and Islamic Studies
Beautiful resources with both free and paid subscription options.
Tonnes of free printables to help teach Islam and academics to your child.
Brilliant workshops and courses for both children and mothers.
Homeschooling resources since 2002.
Free resources to teach youngsters the basics of Islam.
Wonderful resources for youngsters
Books about Tawheed and basics of Islam (faceless)
Juz Amma Lessons with Tajweed
Tafseer colouring books for Juz Amma and Juz Tabarak

Useful information for Early Years education.

For all subjects
Brilliant online videos, clearly explained, for all subjects and ages.
Worksheets for all subjects – free and subscription options
Books from Primary-A Level revision books for all subjects. Great layout.

Planning and Organising
Free Printable Homeschool Planner in several colours and designs
Home Management, organisation and schedule printables

World Cuisine – We try to bake a dish from the country we are currently studying in History/Geography at the time. All tried and tested recipes will be linked below.
Spanakopita (Greek Spinach Pie)
Malawah (Sweet pancakes)
Sweet and Sour Chicken
Joojeh Chicken Kebabs
Shir Berenj (Rice pudding)
Adas Polo (Persian Rice with Lentils
South Africa
Malva Pudding