The easiest way currently to purchase AKT is to first buy one of the more common Cosmos coins that are listed in exchanges such as ATOM. From there you can send the ATOM to a Keplr wallet and use Osmosis to convert it into AKT. For currently supported tokens in Osmosis visit check the token types in the Osmosis web app.
Funding your network account is required to use the network. All messages charge a transaction fee, deployment leases are paid by the account used to create them. There are a two ways to fund your account, buying tokens and applying for awards from the community.
Tokens may currently be purchased on exchanges listed here. From there you can send tokens to your Akash account address.
Developers can request funding from the Akash Community. Please read the article How to Apply for Developer Grants **and follow the steps: