Actually I think this is a will you could begin to train yourself from. It’s not too difficult. The first part is all about her body & soul & god. Print it out and work through it line by line. To help here’s a start.
She wants to be interred in the Middle Aisle of St Olaves parish church, Hart st.
George Thornborrow of Whitechapel gets £400 east India stock upon trust.
From the interest he is to pay her servant Elizabeth Webb 2 shillings a week during her life
The rest of the interest to her brother Richard Knightsbridge
After Richard dies, her Kinsman Thomas Gregory, & Kinswomen Frances Smith & Frances Ashby
From page 2, her late husband was a William Marsh
Have a go, and then post the bits you are still having trouble with. Don’t worry about the probatum. That’s just recording the administration was granted.