I found it helpful for the beginners:

module 3: bearings

[link Point to another website Only the registered members can access]
module 4: pipe work

[link Point to another website Only the registered members can access]
module 7: valves

[link Point to another website Only the registered members can access]
module 9: compressors

[link Point to another website Only the registered members can access]

module 10: dynamic seal

[link Point to another website Only the registered members can access]
Other modules are not available in internet. If anyone have those please share.