Sources of help Excel2007

Dear Forum Members,
I am currently working at the limit of my knowledge, and I am frequently frustrated by my inability to find quick answers to what seem to me simple questions.
For instance I want to use a structure such as this

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Where can I find the properties/methods possible for UserForm1.Controls ?
if I press F1 a blank help form comes up. If I type UserForm.Control in the search box I get a message telling me there is no information. If I right click on the word control in the code editing screen a huge list of words appears, none of which seem relevent. All I have found so far is that UserForm1.Controls.Name is not accepted.
I know that if I ask this forum for specific help I will get it, but how much better it would be if the various help schemes within Excel and VBA could actualy be used.

I know that this posting is a bit of a rant, I am sorry about that, but I suspect that a good clear answer would help lots of people.
John

try this code

Dim ctrl as Control
For each ctrl in UserForm1.controls
Find Name
If ctrl.name="textbox1" then _____
Next ctrl

Andy and Sadath31
Thanks for your input. I will take your ideas home and play with them tonight.I,ll come back to you tomorrow if I am still stuck. I didn't know about F2 Andy so many thanks for that.
John