The Shakers, who were defeated by second-half goals from Jay O'Shea and Marc Richards, are under new ownership after flirting with extinction during the summer and Blackwell has had to build a side from scratch.
Two or three more players could still arrive within the coming weeks.
"They've learned today and every week for the next six to 10 weeks is going to be a big learning curve," said Blackwell.
"We're still two or three players short. I know exactly what they are but we have to make sure we get the right ones or it's going to be a long, hard season.
"Even without those, we've shown we can be a more than formidable outfit in this division. If we'd hit the back of the net, we would have won the game comfortably.
"It always hurts when you lose a game but the club's being rebuilt from top to bottom.
"The dynamics at the club have changed and everyone's really up for it now. Nine weeks ago, the fans would've taken fourth from bottom to stay in the Football League because that's how bad the situation was.
"The team has just been built and the concrete has not even set yet. The club has just come out of intensive care."