The phrase "a sort of training" is correct and usable in written English.
It can be used when describing a type or category of training that may not fit into a specific or traditional definition.
Example: "The workshop provided a sort of training that focused on practical skills rather than theoretical knowledge."
Alternatives: "a kind of training" or "a type of training".
This is a sort of training for him, a demonstration of how to effectively use violence.
Until it was shut down in 1989, Investors Center, a big penny-stock firm based in Hauppauge, served as a sort of training school for stock fraud, some regulators say.
Many of them – including most of the Spacebomb collective, who initially went on to perform improvised music – are alumni of Virginia Commonwealth University's celebrated jazz studies programme, which White describes as "exceptional in its musicality and as a sort of training ground".
I watch a lot of films as a sort of training.
My wife and I got him almost right after our marriage as a sort of training wheels for having a child.
Former Minuteman member Pete Lanteri, who became well-known for organizing the Long Island, New York, chapter of the group, now runs his own "school," a sort of training course in vigilante justice that prepares civilians for combat and other emergencies.
"I've heard rumours that other nations might treat the X Games as a sort-of training competition but I'm not sure if they will - everybody wants to win that X Games gold medal".
(The game has five levels: Easy, Medium, Hard, Expert and No Fail, the latter a sort of training-wheels option to ensure the cloth-eared are not discouraged).
Gun control advocates have raised particular concerns about open-carry laws because under these laws in many states, gun owners are not required to have a permit or any sort of training or testing.
The physical training distinguishes itself by a sort of proprioceptive training in which under modification of perception, movement and environment the movement representation should be further stabilized and differentiated.
Just a sort of sensitivity training, but hopefully we'll be doing some other kinds of training, even around de-escalation.
