diff --git a/init.lua b/init.lua
index 670dbf0..a2564b8 100644
--- a/init.lua
+++ b/init.lua
@@ -2,6 +2,7 @@ require("mappings")
 require("options")
 require("autocommands")
 require("config.lazy")
+require("health")
 
 if vim.fn.has("mac") == 1 then
   require("config.mac")
diff --git a/lua/autocommands.lua b/lua/autocommands.lua
index 766813f..16f3138 100644
--- a/lua/autocommands.lua
+++ b/lua/autocommands.lua
@@ -1,12 +1,8 @@
--- Highlight yanked text
-local highlight_group = vim.api.nvim_create_augroup("YankHighlight", { clear = true })
-
 vim.api.nvim_set_hl(0, "YankHighlight", { bg = "#2d3f5f" })
-
 vim.api.nvim_create_autocmd("TextYankPost", {
   callback = function()
     vim.highlight.on_yank { higroup = "YankHighlight", timeout = 250 }
   end,
-  group = highlight_group,
+  group = vim.api.nvim_create_augroup("YankHighlight", { clear = true }),
   pattern = "*",
 })
diff --git a/lua/health.lua b/lua/health.lua
new file mode 100644
index 0000000..e1f5e97
--- /dev/null
+++ b/lua/health.lua
@@ -0,0 +1,41 @@
+local check_version = function()
+  local verstr = tostring(vim.version())
+  if not vim.version.ge then
+    vim.health.error(string.format("Neovim out of date: '%s'. Upgrade to latest stable or nightly", verstr))
+    return
+  end
+
+  if vim.version.ge(vim.version(), "0.12-dev") then
+    vim.health.ok(string.format("Neovim version is: '%s'", verstr))
+  else
+    vim.health.error(string.format("Neovim out of date: '%s'. Upgrade to latest stable or nightly", verstr))
+  end
+end
+
+local check_external_reqs = function()
+  -- Basic utils: `git`, `make`, `unzip`
+  for _, exe in ipairs { "git", "make", "unzip", "rg" } do
+    local is_executable = vim.fn.executable(exe) == 1
+    if is_executable then
+      vim.health.ok(string.format("Found executable: '%s'", exe))
+    else
+      vim.health.warn(string.format("Could not find executable: '%s'", exe))
+    end
+  end
+
+  return true
+end
+
+return {
+  check = function()
+    vim.health.info([[NOTE: Not every warning is a 'must-fix' in `:checkhealth`
+
+  Fix only warnings for plugins and languages you intend to use.]])
+
+    local uv = vim.uv or vim.loop
+    vim.health.info("System Information: " .. vim.inspect(uv.os_uname()))
+
+    check_version()
+    check_external_reqs()
+  end,
+}
diff --git a/lua/mappings.lua b/lua/mappings.lua
index 8a40ad0..66ac97b 100644
--- a/lua/mappings.lua
+++ b/lua/mappings.lua
@@ -32,6 +32,10 @@ map("x", "<C-\\>", "gc", { remap = true })
 -- clearing highlights
 map("n", "<leader>h", "<cmd>nohlsearch<CR>")
 
+-- diagnostics
+map("n", "[d", vim.diagnostic.goto_prev, { desc = "Go to previous [D]iagnostic message" })
+map("n", "]d", vim.diagnostic.goto_next, { desc = "Go to next [D]iagnostic message" })
+
 -- toggle diff mode
 local function toggle_diff()
   if vim.wo.diff then
diff --git a/lua/options.lua b/lua/options.lua
index c2e26c8..912d4b0 100644
--- a/lua/options.lua
+++ b/lua/options.lua
@@ -8,6 +8,7 @@ local options = {
   hidden = true,                           -- required to keep multiple buffers and open multiple buffers
   hlsearch = true,                         -- highlight all matches on previous search pattern
   ignorecase = true,                       -- required for smartcase to work
+  inccommand = 'split',                    -- show incremental substitution
   mouse = "a",                             -- enable mouse in all modes
   pumheight = 10,                          -- pop up menu height
   showmode = false,                        -- included in statusline
@@ -36,6 +37,8 @@ local options = {
   whichwrap = "<,>,[,],h,l"                -- which "horizontal" keys should wrap to next/previous line
 }
 
+vim.g.have_nerd_font = true
+
 vim.opt.shortmess:append("c")              -- don't give |ins-completion-menu| messages
 vim.opt.iskeyword:append("-")              -- hyphenated words recognized by searches
 -- stylua: ignore end